Expansion-coupling for pipes.



No. 055,033. Ptnted my 3|, |900.

w. VANDERMAN. EXPANSION CUPLING FR PIPES.

'Application filed May 14, 1900.1

(N0 Model.)

Maca-Zar.'

terrao A ELXPANSION-COUPLING FOR PIPES.

sirncenicnrron romnng part of Letters Patent no. 655,033, 'dated July si, ieoo.

Application filed Hay 14,1900. Serial No. 16,592. (No model.)

To all whom it may concern:

Beit known that I, WILLIAM VANDERMAN, avcitizen of the United States, and a resident of Willimantic, in the countyof Windham and State of Connecticut, have invented certain new and useful Improvements in Expansion-Couplings `for Sewer, \Vaste, and Drain Pipes,of which the following is a specification.

My invention relates to the class and style of pipes which are used iaconnectionwith the plumbing of buildings; and the object-s are to provide a device which will enable such pipes to-be fitted in place `between fixed limits as to space allowed and also toprovide means for making repairs in lines of such pipes without damage to the line.

Referring to the drawings forming part hereof, Figure 1 is a diagram view of part of a system of pipes in'the plumbing of a building. Fig. 2 is a riem-unan 'enlarged scale, ot my improved coupling, with parts broken away to show construction.

The greater part of the large pipes used in plumbing in. buildings at the present time are of cast-iron, especially in the sizes from two inch up, which are used for drain, waste, and

. sewer mains,and they come in regular lengths,

with hub and spigot ends for forming joints. Such a pipe is brittle and difcult to shorten, as frequently must be done in piping a b nilding, as there is no way of controlling the direction or extent of the fracture in breaking 4 oi a piece.

It often happens that a line of pipe must be continued between two fixed parts of piping by the insertion of one or more lengths, and no eiiective means of doing this with the old means at hand so as to make a workmanlike job ora thoroughly-packed and close joint between the sections is known.

In the accompanying drawings, the lettera denotes a waste-pipe made up of the sections ci' a" d? and forming part of the system ot plumbing in a building. From the floor l to the ceilingv c is a distance which is nota multiple of any of the regular pipe-sections, although varying from it a few inches only. The section n' shows only a small part of the spigot end and the section d" the hub end of a length of pipe, these two sections being fixed with respect to cach other clear of the ceiling. ln this casca section which is capa fest and large.

ble of extension or contraction for a few inches would enable the line of pipe to be completed.

This extensible section f embodies my invention in the two-part construction united by interengaging threaded parts. The part j' has a spigot end, a hub end, and an enlargement within which a thread, preferably of steep pitch, isformed, and the part f2 has a 6o spigot end provided with an exterior thread which fits within the threaded socket part.

These twoparts f f2 are capable of relative movement on each other, so as to change in., total length a distance about equal to the threaded part on either member.

In Fig. 2 the sectional view illustrates the manner and means of packing the joint h between the two sections as soon as the extreme ends have-'their proper bearingsin the ends of the pipe `sections which are connectedbyl this coupling. Into this joint h, at the hub end of the section f', apacking of oakum is forced,and onto this the melted lead is poured and then compacted in the usual manner.

It will be seen that this coupling device preserves the full inside area of the pipe by providing an enlargement where the threaded part is located between the spigot end and the hub end of this socket-section of the coupling and that in'any line of piping in which this device is located any secti n in which any leak or defect exists can be emoved by rst melting the lead packing at the joint h and taking ont the coupling-section. The parts can be all replaced in a workman-like manner and a perfectlytight joint formed either' in a waste-pipe, an air-pipe, or in whatever place or position the expansible coupling may be located.

The advantages of this device and its ready adaptability to new or repair work` are mani For instance, in any old lino of waste-pipe where a leak may fippear or any other reason may exist for the removal of a section the hub end of the section may be broken, the joint with the next sections broken, and the part desired removed. U nder the ol. method the way in which a new section is inserted in this gap is by loosening up all the sections at the joints between the fixed ends or points and then building up the section on the lower fixed point as the hub of a pipe at'thc door and arranging each section "a F i. camoscing, with alternate sections slanting in oppothe respective hub and spigot ends.

'tended and the length or section united to lof a straight length of piping, and the fact at an angle withthe general line of the pipend and a threaded the line of pipe by t-he interengagement of A further advantage of my improvement is its applicability to all situations in any part that in ordering pipe from' measurements from plans 'allowance can be made for irregular lengths and all the needed pipe ordered ready to put together in the building without any cutting of sections on the job.

IThe improved joint when in place in a line of piping on newpwork can be utilized to ad- `inst and take up any change due to settlement'of the building, and this forms a still further advantage.

Itis obvious that my invention is applicable to pipes of different diameter and irrespeotive of the uses of the pipe in the system of plumbing. l

l What Iclaim as my invention, and desire to secure by Letters'Patent, is-

In combination in an expansiole pipecoupling, a section having a spigot end, a hub spigot end threaded, and a hub end.

2. In combination in coupling, a section having a spigot end,a hub end for the reception of a part located between these ends, and a second section having its spigot end threaded to fit the thread on the opposite section, and a packing located in the hub end of the firstmentioned section, to pack the joint between the two sections.

3. In combination in an expansible pipecoupling, two telescopingsections, the socketsection having a spigot end, an enlarged hub end and a threaded inner surface between the ends, and an inner section having a threaded spigot' end and a hub end.V

WILLIAM VANDERMAN.

Witnesses CHAs. L. BURDETT, ERMA P. COFFRIN.

enlargement between these parts, and a second' section having its an expansible pipepacking, a threaded 

